Thermostatic-valve regulator



(No Model.)

2 Sheets-Sheet 1. 0. P. SAUTTER.

THERMOSTATI'O VALVE REGULATOR.

Patented July 9,1889.

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2 Shts-Sheet 2.

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G. P. SAUTTER. THERMOSTATIG VALVE REGULATOR. No. 406,775. Patented July 9, 1889.

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UNITED STATES PATENT OFFICE.

CHARLES F. SAUTTER, OF BROOKLYN, NEW YORK.

TH E RMO'STATlC-VALVE REG U LATO R.

SPECIFICATION forming part of Letters Patent No. 406,775, dated July 9, 1889.

Application filed October 27, 1838. Serial No. 289,3 l8. (No model.)

To all whom it may concern.-

Be it known that I, CHARLES F. SAUTTER, a citizen of the United States, residing at Brooklyn, in the county of Kings and State of New York,have invented new and useful Improvements in Automatic Valves for Refrigerators, of which the following is a specification.

This invention relates to a valve which is intended to be used particularly on apparatus for producing cold by the expansion of a gaseous fluid, and which serves to regulate automatically the supply of gas to the expansionchamber according to the temperature existingin said chamber.

The peculiar and novel construction of my valve is pointed out in the following specification and claims, and illustrated in the accompanying drawings, in which- Figure 1 represents a longitudinal vertical section in the plane 00 00, Fig. 2. Fig. 2 is a horizontal section in the plane y y, Fig. 1. Fig. 3 is a front elevation of a refrigerator provided with my automatic valve.

Similar letters indicate corresponding parts.

In the drawings, the letter A designates a box, which is made of a good conductorof heat-such as sheetsteeland of sufficient strength to withstand the internal pressure to which it maybe exposed. This box connects by a pipe B with a fountain N, Fig. 3, which contains anhydrous ammonia, and by a pipe 0 with the expansion-chamber 0,-which is secured in the refrigerator B, Fig. 3, and from which leads a pipe Q into the absorber S. In the interior of the box A is secured a thermostat T. In the example shown in the drawings the thermostat consists of a plate a of sheet-zinc, on which are firmly secured three pieces 17 b b, Fig. 2, of thin steel wire, and, since zinc is expanded and contracted at a greater ratio than steel by changes in the temperature, the free end of the thermostat will turn in the direction of arrow 1, Fig. 1, when the temperature increases and in the direction of arrow 2 when the temperature decreases. In the example represented by the drawings 1 have shown two thermostats T T in order to insure a more owerful acmetal plates 0 c, which support the axle cl of a roller E. The boxes 6 e, which form the bearings for said axle, are fitted into slots f in the plates 0 c and exposed to the action of springs g g, which have a tendency to force the roller E outward. The pipe 0 is provided witha tip h, which is by preference madeof glass or other vitreous material and provided with a very small channel andwith a fiat face, which is placed in such a position that the mouth of said channel will be closed by the roller E when the latter is brought into the position shown in Figs. land 2. A stop 'L prevents the roller E from moving beyond its closing position in the direction of arrow 2, Fig. 1.

At the ordinary or mean temperature the thermostat T causes the roller E to move from its closing position in the direction of arrow 1, and the mouth of the tip h is open; but when the communication between the fountain N and the expansion-chamber O is opened the temperature in the refrigerator will be rapidly decreased, and when the temperaturehas reached the desired point to which the thermostat has been adjusted the roller E is moved by the action of the thermostat T to its closing position, so that the supply of gas to the expansion-chamber is checked.

justed to a certain predetermined temperature; but I prefer to apply an adjusting device G, by means of which the thermostat can be set to a higher or lower temperature, as may be desirable. This adjusting device'consists of an eccentric, whiclris situated between the thermostats T T and mounted upon a shaftj, which extends through a stuffing-box in the side of the box A, and which can be turned by means of a hand-wheel k. If the shaft j is turned in the direction of arrow 3, Fig. 1, the eccentric G is brought to bear against the zinc plate a of the thermostat T and the power required to move the valve E from its closing position is increased, or in other Words a higher temperature is required to move the valve from its closing position than before. If the eccentric G is turned in the direction opposite to arrow 3, it will bear against the plate a of the thermostat T and the valve E Will be moved from its closing position, so that the temperature must be lowered in order to carry the valve back to its closing position. I11 other Words, by turning the eccentric Gr in the direction of arrow 3 the thermostat is adjusted to a higher temperature, and by turning the eccentric G in the direction opposite to arrow 3 the thermostat is adjusted to a lower temperature.

\Vhat I claim as new, and desire to secure by Letters Patent, is

1. In an apparatus for producing cold by the expansion of a gaseous fluid, the combination, with the expansion-chamber O, of the.

closed box A, the gas-supply pipe B, leading into said box, the pipe (3, leading from the box into the expansion-chamber, the valve adapted to close the pipe 0, and the thermostat adapted to control the position of the valve, both the expansion-chamber and the closed box being situated in the refrigerator, substantially as described.

2. The combination, with the expansionchamber 0, of the closed box A, the gas-supply pipe B, leading into said box, the pipe 0, leading from the box into the expansionchamber, the tip h, secured in said pipe, the spring-pressed roller-valve E, adapted to close the mouth of the tip h, and the thermostat adapted to control the position of the valve, both the expansion-chamber and the closed box being situated in the refrigerator, sub stantially as described.

3. The combination, with the expansionchamber 0, of the closed box A, the gas-supply pipe B, leading into said box, the pipe C, leading from the box into the expansionchamber, the valve adapted to close the pipe 0, the thermostat adapted to control the position of the valve, and the adjusting device G, both the expansion-chamber and the closed box being situated in the refrigerator, snbstantially as described.

In testimony whereof I have hereunto set myhand and seal in the presence of two subscribing witnesses.

CHAS. F. SAUTTER.

WVitnesses:

WV. 0. HAUFF, E. F. KASTENHUBER. 

